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Proceedings Papers

Round Robin Analysis of Small Punch Testing on 15Kh2NMFA Reference Material

Romy Welschen, Ferenc Gillemot, Igor Simonovski, Oliver Martin, Marek Adamech, Jana Petzova, Rebeca Hernandez, Radim Kopriva, Frederiki Naziris, Boy Molenaar, Murthy Kolluri
Proc. ASME. PVP2022, Volume 4B: Materials and Fabrication, V04BT06A046, July 17–22, 2022
Paper No: PVP2022-83811
DOI: https://doi.org/10.1115/PVP2022-83811
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Topics: Steel, Testing, Light water reactors, Manufacturing, Surveillance, Alloys, Brittleness, Creep, Disks, Fracture toughness
Proceedings Papers

Strain Control Correction for Fatigue Testing in LWR Environments

Marc Vankeerberghen, Alec Mclennan, Igor Simonovski, German Barrera, Sergio Arrieta Gomez, Miroslava Ernestova, Norman Platts, Marc Scibetta, Marius Twite
Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A014, August 3, 2020
Paper No: PVP2020-21373
DOI: https://doi.org/10.1115/PVP2020-21373
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Topics: Fatigue, Fatigue testing, Light water reactors, Gages, Calibration, Corrosion, Displacement, Finite element analysis, Fracture (Materials), Half-life
Proceedings Papers

Evolution of Crystal Orientations in Plastically Deformed Steels: Role of Constitutive Models Used in Finite Element Simulations

Samir El Shawish, Leon Cizelj, Igor Simonovski
Proc. ASME. ICONE21, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications, V001T02A047, July 29–August 2, 2013
Paper No: ICONE21-16767
DOI: https://doi.org/10.1115/ICONE21-16767
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Topics: Constitutive equations, Crystals, Engineering simulation, Finite element analysis, Simulation, Steel, Stainless steel, Electron backscatter diffraction, Plasticity, Anisotropy
Proceedings Papers

Finite Element Models of Progressive Failure of Grain Boundaries

Mihaela Irina Uplaznik, Leon Cizelj, Igor Simonovski
Proc. ASME. ICONE20-POWER2012, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle, and Balance of Plant; Component Reliability and Materials Issues; Steam Generator Technology Applications and Innovations; Advanced Reactors and Near-Term Deployment; Reactor Physics, Neutronics, and Transport Theory; Nuclear Education, Human Resources, and Public Acceptance, 545-550, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-55191
DOI: https://doi.org/10.1115/ICONE20-POWER2012-55191
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Topics: Failure, Finite element model, Grain boundaries, Computational methods, Damage, Modeling, Stress corrosion cracking, Alloys, Anisotropy, Cracking (Materials)
Proceedings Papers

Calibration of an Anisotropic Plasticity Finite Element Model of a Polycrystal in Uniaxial Tension

Samir El Shawish, Leon Cizelj, Igor Simonovski
Proc. ASME. ICONE20-POWER2012, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle, and Balance of Plant; Component Reliability and Materials Issues; Steam Generator Technology Applications and Innovations; Advanced Reactors and Near-Term Deployment; Reactor Physics, Neutronics, and Transport Theory; Nuclear Education, Human Resources, and Public Acceptance, 537-543, July 30–August 3, 2012
Paper No: ICONE20-POWER2012-55173
DOI: https://doi.org/10.1115/ICONE20-POWER2012-55173
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Topics: Anisotropy, Calibration, Finite element model, Plasticity, Tension, Deformation, Crystal structure, Crystals, Electron backscatter diffraction, Stainless steel
Proceedings Papers

Stratified Flows in Pipes: A Parametric Study Towards Fatigue Relevance

Leon Cizelj, Igor Simonovski
Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 5, 653-659, May 17–21, 2010
Paper No: ICONE18-30122
DOI: https://doi.org/10.1115/ICONE18-30122
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Topics: Fatigue, Pipes, Stratified flow, Hot water, Stress, ASME Boiler and Pressure Vessel Code, Design, Finite element analysis, Fluids, Heat transfer
Proceedings Papers

Some Useful Tests for the Finite Element Meshes of Polycrystals With Explicit Account of the Grains and Grain Boundaries

Igor Simonovski, Leon Cizelj
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 3, 753-759, July 18–22, 2010
Paper No: PVP2010-26058
DOI: https://doi.org/10.1115/PVP2010-26058
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Topics: Finite element analysis, Grain boundaries, Finite element model, Modeling, Anisotropy, Computational mechanics, Constitutive equations, Cracking (Materials), Crystals, Damage
Proceedings Papers

Simulated Planar Polycrystalls With Planar and Spatial Random Lattice Orientations

Leon Cizelj, Igor Simonovski
Proc. ASME. ESDA2008, Volume 2: Automotive Systems; Bioengineering and Biomedical Technology; Computational Mechanics; Controls; Dynamical Systems, 333-339, July 7–9, 2008
Paper No: ESDA2008-59533
DOI: https://doi.org/10.1115/ESDA2008-59533
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Topics: Anisotropy, Constitutive equations, Crystals, Elasticity, Finite element model, Materials properties, Mesoscopic systems, Nuclear reactors, Plane strain, Plasticity
Journal Articles

The Influence of the Grain Structure Size on Microstructurally Short Cracks

Igor Simonovski, Leon Cizelj
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research Papers
J. Eng. Gas Turbines Power. July 2009, 131(4): 042903.
DOI: https://doi.org/10.1115/1.3079610
Published Online: April 15, 2009
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Topics: Fracture (Materials), Plasticity, Crystals
Proceedings Papers

The Correlation Length: A Measure of Inhomogeneities in Polycrystalline Materials

Igor Simonovski, Marko Kovacˇ, Leon Cizelj
Proc. ASME. ICONE12, 12th International Conference on Nuclear Engineering, Volume 1, 181-191, April 25–29, 2004
Paper No: ICONE12-49603
DOI: https://doi.org/10.1115/ICONE12-49603
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Topics: Crystals, Finite element analysis, Finite element model, Grain size, Mesoscopic systems, Plasticity, Shapes, Shear (Mechanics), Stress, Yield strength
Proceedings Papers

Elasto-Plastic Behavior of Polycrystalline Steel at Mesoscopic and Macroscopic Levels

Marko Kovacˇ, Igor Simonovski, Leon Cizelj
Proc. ASME. PVP2003, Computer Technology and Applications, 123-128, July 20–24, 2003
Paper No: PVP2003-1896
DOI: https://doi.org/10.1115/PVP2003-1896
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Topics: Mesoscopic systems, Steel, Anisotropy, Stress, Continuum mechanics, Crystal lattices, Crystals, Elasticity, Finite element methods, Plasticity